Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 67 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.Best estimate of 22 × 48? (a) 10000 (b) 1000 (c) 100 (d) 2000
2. 2.80 × 50 =
3. 3.51² =
4. 4.Check with nines: 63 × 39 = 2457. Correct or wrong? (a) wrong (b) correct
5. 5.₹86.15 + ₹30.45 =
6. 6.15 × 11 =
7. 7.64 + 14 + 58 + 26 =
8. 8.16 × 8 =
9. 9.₹68.60 + ₹26.65 =
10. 10.Check with nines: 64 × 25 = 1604. Correct or wrong? (a) correct (b) wrong
11. 11.14 × 5 =
12. 12.30 + 35 + 11 + 28 =
13. 13.101 − 68 =
14. 14.Check with nines: 742 + 787 = 1537. Correct or wrong? (a) correct (b) wrong
15. 15.1850 ÷ 50 =
16. 16.229 + 17 =
17. 17.₹33.45 − ₹2.60 =
18. 18.40 + 11 + 87 + 79 =
19. 19.1% of 80 =
20. 20.Best estimate of 18 × 58? (a) 12000 (b) 120 (c) 2400 (d) 1200
21. 21.203 − 38 =
22. 22.Check with nines: 24 × 87 = 2089. Correct or wrong? (a) wrong (b) correct
23. 23.8 + 2 + 4 + 4 + 6 =
24. 24.Check with nines: 766 + 341 = 1110. Correct or wrong? (a) wrong (b) correct
25. 25.65 × 4 =
26. 26.346 + 77 =
27. 27.479 − 98 =
28. 28.₹32.05 + ₹44.65 =
29. 29.25 + 13 + 75 + 24 =
30. 30.13 × 13 =
31. 31.403 + 58 =
32. 32.35 × 15 =
33. 33.277 + 38 =
34. 34.20% of 660 =
35. 35.29 × 4 =
36. 36.525 ÷ 25 =
37. 37.13 × 11 =
38. 38.386 + 98 =
39. 39.576 − 88 =
40. 40.48 × 15 =

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